The law is intended to inform the public just like when a sexual predator moves into a neighborhood and has to identify themselves at that point. Personally I like the law. Of course I also believe that they should have to live with large billboards in their yards showing their face and screaming to the world that they are sexual predators, and well I don't think they should ever be allowed to see the light of day after they are caught but until someone makes that law at least we're moving in the right direction.
From Fox News:
– A new Louisiana law requires convicted sex offenders and child predators to reveal their status on social media websites.
Having failed to ban such offenders from websites like Facebook and Google+, state lawmakers instead decided sex offenders should be required to notify the online community of their presence the same way they must notify a neighborhood when they move in, WWL radio reported.

"In today's society, people come into our homes via the Internet, whether it's Facebook or Pinterest or Instagram," GOP Rep. Jeff Thompson said. "We should have the same information available."
If offenders fail to abide by the law, they face up to 10 years in prison.
"This provides prosecutors with another tool to make sure that those people which intend harm to our children are going to face the consequences," Thompson said.
Handbook question #1: Any chance Facebook adds a "Sexual Predator" option on your information page?
Handbook question #2: How long until the ACLU challenges this in court claiming a violation of personal rights of felons?